That cannot be annulled or made void: an indefeasible claim; indefeasible rights. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "indefeasible" in a sentence
"If seisin corporeal, user immemorial, and prescription for levance and couchance conferred any title indefeasible, then were the rabbits the owners in fee-simple, absolute, paramount, and source of pedigree."
"While NBN Co should be prepared to build, they should also be "open to securing long-term indefeasible rights of use from existing dark fibre assets on these routes."
"The title so regis - tered is made by law indefeasible, that is, the certificate is given the effect of a decree of court which cannot be questioned."